**Summary:**
The Ministry of Earth Sciences announced the operationalization of a Navigation with Indian Constellation (NavIC)-based early warning system for major natural disasters, including earthquakes, floods, cyclones, and landslides. This system functions under the Common Alerting Protocol (CAP)-based Integrated Alert System SACHET, a project of the National Disaster Management Authority. NavIC's coverage extends to the Indian Territory and approximately 1500 km beyond Indian borders. Following a successful pilot project in Tamil Nadu, the government has approved Pan India implementation of Phase I of the CAP Project. State Disaster Management Authorities (SDMAs) utilize the NavIC system to disseminate warnings. The NavIC signal structure transmits both navigation and text messages, the latter used for alerts, forecasts, and directives related to natural disasters. Key components of the system include Alert Generating Agencies (IMD, CWC, FSI, DGRE, INCOIS, etc.), warning dissemination agencies (cellular networks, radio, television, Internet, satellite, etc.), and recipients (general public and responders). The Disaster Management Authorities at the National and State levels monitor the efficiency of this communication chain. The announcement was made by Dr. Jitendra Singh, Union Minister of State (Independent Charge) for Science and Technology, Earth Sciences, MoS PMO, MoS Personnel, Public Grievances Pensions, Department of Atomic Energy and Department of Space, in a written reply in the Rajya Sabha on August 21, 2025.
Key Entities Referenced
NavIC: Navigation with Indian Constellation (NavIC) based early warning system for natural disasters.
National Disaster Management Authority: The authority under which the SACHET project, an Integrated Alert System based on the Common Alerting Protocol, operates.
Tamil Nadu: Indian state where a successful Pilot Project for the Common Alert Protocol (CAP) was implemented.
Common Alert Protocol: The protocol (CAP) used in the SACHET project for disseminating early warnings.
State Disaster Management Authority: The state-level authority (SDMA) that utilizes the NavIC system to disseminate warnings.
IMD: Alert Generating Agencies, India Meteorological Department
Dr. Jitendra Singh: Union Minister of State Independent Charge for Science and Technology, Earth Sciences, MoS PMO, MoS Personnel, Public Grievances Pensions, Department of Atomic Energy and Department of Space
Rajya Sabha: The Council of States, the upper house of the Parliament of India, where a written reply was submitted.
Ministry of Earth Sciences
PARLIAMENT QUESTION: Expansion of NavIC-
based Early Warning System
Posted On: 21 AUG 2025 6:28PM by PIB Delhi
Navigation with Indian Constellation (NavIC) based early warning services for major natural disasters like
earthquakes, floods, cyclones, landslides etc has been operationlised under the “Common Alerting Protocol
Based Integrated Alert System (SACHET)”, project of National Disaster Management Authority.
The coverage area for NavIC is designed to cover the Indian Territory and surrounding 1500 km of Indian
borders. After a successful Pilot Project was implemented in Tamil Nadu, Pan India implementation of Phase I
of the Common Alert Protocol (CAP) Project has been sanctioned by the Government.
The State Disaster Management Authority (SDMA) utilizes the NavIC system to disseminate all warnings. The
NavIC Signal Structure has provision to transmit text messages besides navigation messages. These short
communication messages are being used for messages related to alerts, forecast and directives on the occurrence
of natural disasters like floods, earthquake, Tsunami, cyclones, landslides etc. The components of this cycle are
the Alert Generating Agencies (IMD, CWC, FSI, DGRE, INCOIS etc), the warning/alert disseminating
agencies (cellular network, radio, television, Internet, Satellite etc) and the recipients of this warning (general
public and the responders). The efficient workflow of this chain is monitored by the Disaster Management
Authorities at the National as well as State level.
This information was given by Dr. Jitendra Singh, Union Minister of State (Independent Charge) for Science
and Technology, Earth Sciences, MoS PMO, MoS Personnel, Public Grievances & Pensions, Department of
Atomic Energy and Department of Space, in a written reply in the Rajya Sabha today.
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NKR/PSM/AV
(Release ID: 2159342)